lightyellow n.淡黃lightyear n.光年lightwood n.引燃用的木材；多油的松木；輕質木材lightwell n.采光井lightweighting 輕量化lightweight-piers 輕型墩lightweight tinplate [食品科學技術]低錫馬口鐵lightweight structures [土木建筑工程]輕型結構lightweight steel construction 輕鋼結構lightweight paper 輕磅紙lightweight laser designator [航空、航天科學技術]輕型雷射標示器lightweight laser 輕便型激光器lightweight insulating concrete [機械工程]輕質保溫混凝土lightweight filler [土木建筑工程]輕填料輕質攙合料lightweight diving outfit [交通運輸工程]輕型潛水裝置lightweight cover [土木建筑工程]輕型上蓋lightweight construction 輕型結構；輕量構造lightweight concrete 輕質混凝土lightweight aggregate concrete blocks [土木建筑工程]輕集料混凝土砌塊lightweight aggregate concrete 輕骨料混凝土；輕質集料混凝土